Question

I’m trying to pass an array in an ajax request, but apparently it doesn’t work…

        $.post("process.php", array,
            function(data) {
                document.getElementById("output").innerHTML = JSON.parse(data);
            });

My question is, how to use the data sent in the process file?
The array is built like that: [key (0/1/2...)] => ["prod_id"]. The id varies.
I read somewhere using $_POST["key"]; would work, but it doesn’t.

It’d be even better if I could just get the array as is in the process file.

process.php (really basic – just to check wether it’s working or not.):

<?php
print($_POST["test"]);
?>

Answer 1

In order to receive data in php you need to send key/value pairs, however you are only sending a value.

You receive in php with $_POST[key] which will return the value for that key.

JS:

$.post("process.php", {myAray: array}, function(data) {
            $("#output").html(data);
});

php

   $array= $_POST['myArray'];

To return this array from php as text just to test your ajax can use var_dump( $_POST) or var_dump($array);

If you intend to receive JSON in response from server, you do not need to use JSON.parse , jQuery will parse json internally. However you would need to add “json” as dataType argument to $.post

$.post("process.php", {myAray: array}, function(data) {
            /* loop over json here*/
},'json');